Printer s quoin



(ModeL) W. J. TINSLEY. PRINTER'S QUOIN.

Patented Sept. 27, 1892.

Jfiventor:

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WILLIAM J. TINSLEY, OF BROOKLYN, NEW YORK.

PRINTERS QUOIN.

SPECIFICATION forming part of Letters Patent No. 483,185, dated September 27, 1892.

Application filed February 1 1892- Serial No. 420,001. (ModeL) To aZZ whom it may concern.-

Be it known that I, WILLIAM J. TINSLEY, of the city of Brooklyn and State of New York, have invented certain new and useful Improvements in Printers Quoins, of which the following is a specification.

The invention relates to improved means for rendering the quoins extensible; and it consists of two complementary parts adapted to be placed side by side and having their 0pposing faces provided with alternate raised and depressed portions, which coact on a proper rotation of one of the said parts to force the said apartments apart for the purpose of looking or securing the type.

In the further description of the invention which follows reference is made to the accompanying drawings, forming a part hereof, and in which Figure 1 is a plan view of theinner face of one of the members of the improved quoin. Fig.2 is also a plan view of the opposing face of the second member. Fig. 3 is a plan view of the two parts in conjunction unlocked, and Fig. 4 is a plan view of the same locked or spread. Fig. 5 is a top view showing the parts extended, and Fig. 6 is a view of the bottom of Fig. 5.

Similarletters indicate corresponding parts.

Referring to the device, the preferred construction of which is shown in Figs. 1 to 6, inclusive, A B are plates the inner faces of which are provided with alternate raised and depressed portions a a a and b b, respectively.

0 is an axis, upon which the plate A rotates in the hole 01 in plate B, and the end of said axis 0 may be countersunk therein to unite the two plates, as shown in Fig. 5, or the plates may be used together Without confining the end of the axis, as shown.

6 is a check-lug on one end of the plate A, which fits into a complementary opening f, and its function is to prevent the further downward rotation of the plate A when locked.

g is an orifice in the plate B, exposing the edge of the plate A, when locked, to facilitate unlocking by a lever when disengagement by the ordinary means cannot be etfected.

The plates A and B have semicircular complementary grooves h h in their upper edges, which allow the two plates to come into conjunction at that point when depressed or unlocked, as shown in Fig. 3.

It is obvious that when the complementary parts a, b, and h are in conjunction, as shown in Fig. 3, the device is unlocked or at its limit of contraction and that when the plate A is rotated from c to f the raised portions of the two plates are in contact and the device is at its limit of extension or locked,as shown in Figs. at and 5.

The raised surfaces to a, a are attained bya gradual upward incline from the depressed ones I) b when the plate A is rotated on its axis or pressed downward from e to f, Fig. 3.

It frequently happens that the space between the type-forms and the chase is so small as not to allow of the use of the quoins as now ordinarily made, and the'form must be secured or locked up by thin strips of wood, pieces of thin leads, etc. Itis one of the objects of this device to obviate this difficulty by constructing them of various degrees of thickness.

The quoins may be inexpensively made from sheet metal in a drop-press or cast, as may be desired.

Having thus described my invention, its purpose, its construction, and mode of manufacture in this specification and illustrated the same in the accompanying drawings, form ing a part thereof, what I claim as new, and desire to secure by Letters Patent, is-

An extensible printers quoin consisting of two plates A and B, in combination, having grooves h h and the opposed raised and depressed surfaces (1 a a and b b, axis 0, uniting plates inseparably, and lug e, operated by the rotation of the plate A to produce extension of the parts, the Whole combined, arranged, and operated as set forth.

lVM. J. TINSLEY.

Witnesses:

JOHN F. GRUNDMAN, SAMUEL GoLDsrEIN. 

